Coiling machine



Oct, 25, 1938. E. s. ELLIS 2,134,036

comma MACHINE Filed July 22, 1936 3 Sheets-Sheet 1 HGJ.

INVENTO/e EMMETT $.ELLIS BY I I Oct. 25, 1938,- E. s. ELLIS COILING MACHINE Filed July 22, 1936 5 Sheets-Sheet 2 w- ON I r i I I I l I I -1 INVENTOR EMMETT $.ELLIS A TTORNEYS E. S. ELLJS COILING MACHINE Filed July 22, 1936 I 3 Sheets-Sheet 3 FIG.6-

INVENTOR EMMETT S. ELLIS A TTORNE YS.

Patented Oct. 25, 1938 s. 2,134,035

UNITED STATES PATENT OFFICE COILING MACHINE Emmett S. Ellis, Detroit, Mich assignor to Kelsey- Hayes Wheel Company, Detroit, Mich, a corporation of Delaware Application July 22, 1936, Serial N0. 91,934 16 Claims. (01. 15356) The invention relates to coiling machines and Figure 4 is a cross section on the line 44 of r f rs m re p r i a ly to hi f r coiling Figure 3 and showing, in addition, the means for a strip of stock of angular cross section to form driving the cam shaft;

an arcuate member of substantially the same Figure 5 is a cross section on the line 5-5 of 5 cross section. While the machine forming the Figure 2; a

subject matter of the invention is capable of Figure 6 is an enlarged cross section on the other uses than illustrated, it is of particular line 66 of Figure 2; and utility when. employed to form an arcuate brake Figure 7 is an enlarged cross section on the shoe from a strip of stock of angular cross secline 1-1 of Figure 1.

10 tion. The coiling machine, as illustrated, is adapted 10 The invention has for one of its objects to proto form a straight strip of T-section stock into vide a machine having rolls angularly spaced an arcuate brake shoe having a web and a head, about and cooperable with the master roll, these to which latter a brake lining is secured. The cooperable rolls being carried by bearings slidbrake shoe coiling machine in'general comprises 15. able on the frame of the machine so that the a base I, three upright frame members 4, 5 and machine may provide for stock of different thick- 6 mounted upon the base, a master shaft 1, a ness. series of shafts 8, and a crown 9 secured to the The invention-has for another object to proupper ends of the frame members and tying the vide a machine in which the cooperable rolls same together. 5

are independently movable toward and away The master-shaft 1 is journaled in the anti- 20 from the axis of the master roll so that each 00- friction bearings 4, 5' and 6', Which latter are operable roll will do its intended amount of fixedly secured to and carried by the frame mem-. work. 'bers 4, 5 and 6 respectively. The series of shafts The invention has for still another object to 8 comprise theupper shaft l0 and the back shafts provide a machine in which the cooperable rolls ll, l2 and 13. The upper shaft II] is journaled 2 5 are subjected to pressure by means arranged and in three anti-friction hearings to, Ill and I0 constructed to allow the cooperable rolls to tilt which bearings are slidably mounted on the and thereby compensate for variation in thickframe members 4, 5 and 6 respectively in direcness of the stock as it passes through the mations radially of the master shaft 1 and toward 0 chine transversely of its length. and away from its'axis, these frame members 0 The invent on as for a further ject to being provided with suitable guides for this purconst'ruct the machine so that the amount of pose. The back shafts ll, l2 and I3 are also pressure exerted upon the cooperable rolls may journaled in bearings constructed and arranged be readily varied. in the same manner as the bearings for, the up- The inven o as o Still further j ts t0 pershaft Ill to individually slide radially of the 5 pr vi h m i with a p r r removmaster shaft and toward or away from its axis. 111g the formed member from the master roll; to I4 is a master roll between the frame members provide means operable in timed relation to the 4 d 5 nd secured t th a t shaft 1 t master r ll for operating th s pp t pr vide rotate therewith. This master roll comprises 40 a sectional master roll and to release the presthe sections l5 and IS, the section !5 being keyed 40 sure holding the sections in predetermined relat th master shaft and t ecti is being tion to each other prior to operation of the stripsleeved upon the section 15 and being keyed per; and to construct the frame of the machine thereto. These sections are shaped to provide so that all of the rolls may be readily removed the radial annular space I! therebetween to reand'replaced. ceive the web of the T-section stock and to pre- 45 The invention has for other objects the novel vent this web. from becoming wrinkled while the arrangements and combination of parts as more stock is being coiled to form the arcuate brake fu y hereinafter se forth I shoe. The section I5 is slightly movable axially In the d a relative to the section Hi to provide for initial Figure 1 '8 a e eleValJiOn O a ng entrance of the web into the space and to also 50 chine showing an embodiment of my invention; provide for release of the web after the brake Fi ure 2 i a cr ss section n he line 22 f shoe has been formed. e To secure this slight axial Figure l; movement, I have provided the hydraulic plung- Figure 3 is a front elevation,.partly in section, er l8 which encircles the master shaft 1 and of a part of the machine; abuts the section 15. This plunger is slidable 55 the others.

. preferably fixedly sure bar 34.

within the cylinder I9 which also encircles the The upper shaftlll has the roll 22 secured thereto to rotate therewith, this roll being positioned to cooperate with the master roll H, the strip of stock passing between these rolls. As shown, the roll secured in place between the frame members 4 and 5 by the spacer 23 and the collar 24. The spacer abuts the end wall 25 of the box of the anti-friction bearing I0 and the collar is threaded upon the shaft. The back shafts H, l2 and I3 also have secured thereto rolls for cooperating with the master roll l4 and these rolls are positioned and held in place in the same manner as the roll 22.

The master shaft 1 is driven by means of the gearing 26 which may be driven by any suitable prime mover, such as an electric motor. The upper shaft l0 and the back shafts H and [2 above the back shaft l3 are adapted to be driven from the master shaft 1 by gearing 21 located between the upright frame members 5 and 6. This gearing includes the ratchet gear assembly 28 which is constructed to normally positively drive the upper shaft ill from the master shaft 1 and to also allow the upper shaft H) to rotate at a higher rate than the master shaft 1, if for any reason the strip of stock passing between the master roll l4 and the roll 22 frictionally drives this roll at a higher rate. The ratchet gear assembly comprises the gear 29 journaled upon the upper shaft ID, the pocketrmember 30 keyed to the shaft l0 and the dog 3| pivoted upon the gear 29 and adapted to extend into the pockets 32 upon the member 30 andto have driving engagement with the ends of these pockets.

For the purpose of positioning the rolls upon the shafts III, H, H and I3 in predetermined relation to the master roll 14, I have provided a hydraulic systemwhich is so constructed that each of these rolls is subjected to the same pressure acting in a-direction toward the axis of the master roll. The construction is also such that each of these rolls is movable independently of 33 is a conduit connected at one end to a suitable central pressure system, such as a pump and the associated means for driving and controlling the pump. This conduit is adapted to conduct liquid under pressure to individual cylinders and this liquid acts upon a piston in each of these cylinders, which in turn through associated mechanism exerts pressure upon the roll associated therewith radially of and toward the I axis of the master roll. Inasmuch as the arrangement for each of the cooperable rolls is the same, that for the cooperable roll 22 only will be described. In detail, 34 is a presure barextending parallel to the axis of. the upper shaft l0 and abutting the boxes of the anti-friction bearings I0, 10 and I!) diametrically opposite the axis of the master shaft 1. This pressure bar is secured to the boxes of the anti-friction bearings l0 and I0 35 is a cylinder in the crown 9 having its axis in alignment with the axesof the upper shaft l0 and'master shaft 1 and located outwardly beyond the pres- 36v is a piston within this cylinder and having the central helm-spherical bear- 22 is keyed to the shaft I0 and is ing 31 which abuts and fulcrums upon the pad 38 fixedly secured to the pressure bar 34. This pad preferably has the hemi-spherical recessed bearing 39 for fitting the bearing 31. The axes of the cylinder 35, piston 38 and bearings 31 and 39 are preferably located midway between the median planes of the anti-friction bearings l0 and Ill and also between the extended ends of the roll 22. As a result of'this construction, it will be seen that the cooperable roll 22 will be held in a predetermined relation to the master roll I4 and also that this roll may angularly tilt to compensate for variation in thickness of the strip of stock passing between this roll and the master roll transversely of the length of the stock.

Individual check valves 40 are provided in the connections between the conduit 33 and each of the cylinders in the crown 9 to prevent the cooperable rolls upon the shafts l0, ll, [2 and I3 from being affected by movement of one. These check valves permit entry of the liquid under pressure into the cylinders, but prevent discharge from the cylinders. As a result, it will be seen that each of the cylinders is subjected to the same pressure which may be readily varied as desired to enable the machine to take care of stock having heads of different thickness.

For the purpose of removing the arcuate brake shoe from the master roll after the brake shoe has left the roll upon the lower back shaft I3, I have provided a stripper which is or may be operable in timed relation to the master roll. For the purpose of releasing the pressure exerted by the roll sections I5 and I8 of the master roll I4 after the strip of stock has become coiled into an arcuate brake shoe and left the roll upon the lower back shaft 13, I have provided means which is operable in timed relation to the master roll I4 to release the pressure in the cylinder l9. As shown, Al is a stripper bar which may have its inner end positioned, in operative position adjacent the master roll l4 to engage the leading end of the formed brake shoe. 42 is a valve in the pressure line including the cylinder l9. As shown in the present instance, both the stripper bar and valve are adapted to be operated after the master roll has made two complete revolutions. In detail, 43 is a shaft mounted upon the frame of the ma.- chine, the shaft being journaled, as shown, upon the auxiliary frame member 44 which is secured at the front of the machine to the upright frame members 4 and 5. This shaft is driven by means of the sprocket wheel 45 secured thereto, the sprocket wheel 46 upon the master shaft 1, and the sprocket chain 41, the'former sprocket wheel having twice the number of teeth of the latter sprocket wheel. 48 is a cam fixed upon the shaft 43 and respectively controlling the stripper bar 4| to urge the same into operative position adjacent the periphery of the master roll and to also allow the stripper bar to move upon its guide 49 longitudinally outwardly and away from the master roll into inoperative position under influence of the spring 50. 5| is a second cam fixed 7 on the shaft 43 and operable in substantially the member 44. The auxiliary frame member also carries the stripper bar 4| and the valve 42.

- For the purpose of permitting the master roll and the cooperable rolls to be readily removed and replaced, the upright frame member 4 is movably mounted upon the base I As shown 54 is a screw journaled in the base I and extending longitudinally thereof and 55 is a nut secured to the lower end of the upright frame member 4. Upon removing the studs which secure the crown 9 to the upper end of this upright frame member and the studs which secure the auxiliary frame member 4d to this upright frame member and also the sprocket wheels and chain, the screw can be rotated to move the frame member 4 and the anti-friction bearings carried thereby away from the frame member and longitudinally of the master shaft 1 to a position clearing this master shaft'and also the shafts l0, ll,'l2 and i3 a, sufiicient distance to enable removal of the positioning collars and the rolls and subsequent replacement.

What I claim as my invention is:

1. In a coiling machine, the combination with a master roll, of rolls angularly spaced with respect to said master roll and adapted to cooperate therewith, said last mentioned rolls being radially movable toward and away from the axis of said master roll, and means independent of the stock being coiled for exerting pressure upon said last mentioned rolls independently of each other in directions toward the axis of said master roll.

2. In a coiling machine, the combination with a frame, of a shaft journaled upon said frame, a master roll upon said shaft, rolls angularly spaced with respect to said master roll and adapted to cooperate therewith, shafts for said last mentioned rolls, bearings for said last mentioned shafts slidably mounted on said frame to move radially of said master roll, means adapted to be controlled from a single source for normally maintaining said bearings in predetermined relation to said shaft for said master roll, and means for driving said shaft for said master roll and certain of the shafts for said other rolls.

3. In a coiling machine, the combination with a master roll and a roll adapted to cooperate therewith, of means for applying pressure to said second mentioned roll radially of and toward the axis of said master roll, said means comprising cooperating elements with one fulcruming on the other within the extended ends of said second mentioned roll.

4. In a coiling machine, the combination with a master roll and a roll adapted to cooperate therewith, of means for applying pressure to said second mentioned roll toward the axis of said master roll, said means being arranged and constructed to provide for tilting of said second mentioned roll upon variation in thicknessof the stock passing between said rolls transversely of its length.

5. In a coiling machine, the combination with a frame, of a shaft fixedly journaled upon, said frame, a master roll upon said shaft, a second shaft, a roll upon said second shaft adapted to cooperate with said master roll, bearings for said second shaft slidably mounted upon said frame toward and away from the axis of said master roll, a pressure bar engageable with said last mentioned bearings, and means for exerting pressure upon said pressure bar in a direction toward the axis of said first mentioned shaft,

said pressure applying means beingfulcrumed upon said pressure bar'within the confines of the extended ends of'said first mentioned roll,

and means beyond the ends of said rolls for driving said shafts. Y

'6. In a coiling'machine', the combination with a master roll, of rolls angularly spaced with respect to said master roll and adapted to cooperate therewith, said last mentioned rolls being independently movable toward and away from the axis of said master roll, and hydraulic means for exerting pressure upon said last mentioned rolls independently of each other in directions toward the axis of said master roll.

7. In a coiling machine, the combination with a master roll, of rolls angularly spaced with respect to said master roll and adapted to cooperate therewith to form an arcuate section from a strip of stock, anda stripper radially movable into and out of engageable position with the formed arcuate section to-disengage the same from said roll. 1

8. In a coiling machine, the combination with a master roll, of rolls angularly spaced with respect to said master roll and adapted to cooperate therewith to form an arcuate section from a strip of stock, a stripper engageable with the formed arcuate section to disengage the same from said master roll, and means for actuating said stripper in timed relation to said master roll.

9. In a coiling machine, the combination with a master roll formed of sections movable relative to each other in axial directions, of means for applying pressure to one of said sections to normally hold the same in a predetermined relation to the other of said sections, rolls angularly spaced with respect to said master roll and adapted to cooperate therewith to form an arcuate section from a strip of stock passing between said rolls, and means for automatically releasing the pressure, said means being operable in timed relation to said master roll.

10. In a coiling machine, the combination with a master roll, rolls angularly spaced with respect to said master roll and adapted to cooperate therewith and shafts for said first and second mentioned rolls, of a frame comprising frame members at opposite ends of said first and second mentioned rolls, and bearings on said frame members for said shafts, one of said frame members being movable relative to the other to disengage the bearings carried by said movable frame member from said shafts whereby said rolls are made accessible.

11. In a coiling machine, the combination with a master roll, rolls angularly spaced with respect to said master roll and adapted to cooperate therewith and shafts for said first and second mentioned rolls, of a base, frame members upon said base at opposite ends of said first and second mentioned rolls, bearings carried by said frame members for each of said shafts at the opposite ends of the rolls thereon, and cooperating means upon said base and one of said frame,

a frame, of a shaft fixedly journaled upon said frame, a master roll upon said shaft, a second shaft, a roll upon said second shaft adapted to cooperate with said master roll, bearings for said second shaft slidably mounted upon said frame toward andaway from the axis of said master roll, a pressure bar engageable with said last mentioned bearings, and means independent of the stock being coiled for exerting pressure upon said pressure bar in a direction toward the axis of said first mentioned shaft.

14. In a coiling machine, the combination with a master roll and a roll adapted to cooperate therewith to form a rolled section of stock, of a stripper normally radially spaced from the periphery of said master roll, and means for moving said stripper toward the periphery of the master roll to disengage the rolled section from the master roll. 7

15. In a coiling machine, the combination with 13. In acoiling machine, the combination witha master roll, of rolls angularly spaced with respect to said master roll and adapted to cooperate therewith to form an arcuate section from a strip of stock, a stripper, means for moving said striper into-operative position adjacent the periphery of the master roll, and means for rotating the master roll to move one end of the rolled arcuate section into engagement with said stripper to disengage the arcuate section from the master roll.

16. In a coiling machine, the combination with a master roll, of rolls angularly spaced with respect to said master roll and adapted to cooperate therewith, said last mentioned rolls being independently movable toward and away from the axis of said master roll, and means for exerting pressure upon said last mentioned rolls independently of each other in directions toward the axis of said master roll.

- EMME'I'I' S. ELLIS. 

